Inking mechanism for printing-presses.



M. A. DRGITCOUR. INKING MEGHANISM POE PRINTING PRESSES.

APPLICATIOBr TILED DEO. 23, 1908.

-. Patented Apr. 19, 1910.

'UNrrnDC sTATEs 4Inmnivr. CFFICE.

42inrc1-gratin A. DItoI'rCoUIa. or CHICAGO, ILLINOIS, AssIeNoR rro MIE'HLE rItINrING :Lia-1: I Y Toqlli'wtom 'Lt/may concerm. V l

B -.;it known that` I, MICHAEL A. ,DROIT- .'oumfa citizen of the United States, residing in Chicago, in the county of Cook and State 5 of Illinois, -h'ave imented a new and useful Improvement in Inking Mechanisms for Printing-Presses, of `which the following is a. .s'pec1fication'. y

This -nvention is' designed to\.c ontrol the 1 0 amount of ink supplied tothe ductor roll of prmtmg presses, and -to that end I Combine withthe ductor roll a mechanism whereby the Y periods during which-that roll is in Contact with the4 supply yroll may be regu;` lated and made short yor longaccording `as work being done requires 1nu`ch or little 1 KH. {.f '1 -he invention is fully set forth :in the de`- ser-iptlon below, and will be :understood from such. description in connection with the accompanying drawinggin which latter- Figure 1` is a side elevation partly-insection,of that .part of a printin .press to which my invention relates. Fig. 2 is a horizontal section of the same.

is held out of action. l Fig. L.t'fis an elevation -"o`f a modifiedconstruCt-ion; 1 v

In" said drawing, 5 represents the ink reservoir of aprint-ing press, and 6 isthe feed roll-located in the reservoir, and driven in any suitable way. 1 7 'is the blade for removing the excess ink from' the feedv roll, and 8 is the ductor roll,

supported upon arms 9 ,andr pivoted at 10 and adapted to swingv first into Contact with the feed 15011;` and then to swing back and carry the ml'r'ceived from the feed roll to the distributing rolls, the latter not being 40 shown. The arms 9 are constantly pressed toward the feed roll by a' sprincr or' springs 11, but the ductor roll is kept om- Contact with the feed roll except' at the desired times and for desired periods by a cam 12 mountl ed loosely on the sli-aft 13 of the feed roll.

' I ,l 'specification of Letters Patent.

Fig. 3 is an, elevation of the cam whereby .the ductor roll- ,r'nESsAND MANUFACTURING CoMrANY, or` CHICAGO, ILLINOIS, A` CORPORATION PatentedA131'.4 1.95` 19.1.0',

Appiicatin filed December 23, 190s. serial No. 468,937.

21 'and by the arm 16 which is rigid;with.a.gl quadrant 17' also mounted-on shaft 113- butloose thereon. 4 1. i i The quadrant carries a pin 185 passing. through one of the holes 19in thequadrant 60 and entering the curvedslot 20 in the cam in Which slot the pin is4 free to slide lengtlr wise of the slot. The arm as well as the quadrant 'is also loose on shaft 13, and con-l sequent-ly neit-her the arm.l the cam or the 65 .quadrant turn with said shaft, but the cam must turn with the quadrant whenever the pinl 18 reaches the forward end-of the slot 20. The arm 16 is swung by a crank wheel -Y 22 which is Connected .to the armbyl the rod 70 `23. The wheel 22 is toothed and meshes with a second toothed Vwheel 25, andpower may be Vapplied to either of :themas preferred. The wheel 25 is also a crank' wheel and is 4 connected to one of the arms -9by a -rod 26-75 n having an elongated opening 32-for .thepin 33 which Supports it on the wheel shaft. This wheel and its Connecting rod serve to carry the ductorl roll over againstthe diS- tributing rolls at proper times, and :the 30 movements caused by it are of courseproperly'timed with reference to the movements. of the ductor to theV feed roll, and this is .A easily done by means of the two Crank wheels meshing together as shown. The cam 12 has a-projection 27 to which the spring 21 may be attached, andthis projection coact-s with a stationarily located u stop 28 in arresting the cam when the ductor s roll has been lifted to the position of Fig. 1 -90 by cam 3l and the spring 21 hasacted to' ref turr''the Cam 12 to the position shown-in e With the construction described, it will be,. noticed that the length of time ofithe' con-` .95 tact of the ductor roll with the i'eedfrollisjV determined by pin 18 on quadrant 17. By shifting such pin on the quadrant the length of time of Contact can be varied. Thus when 'the pin 18 is in the posit-ion illustrated in 100 Fig. 1 the quadrant will not actuate the cam 12 until the pin 18 has moved to the forward end -of the slot 20. When that occurs the pin 18 will move the cam and bring its lower portion into active relation to the duc-tor and permit the ductor roll to Contact with the feed roll until the ductor is moved away by cam 31, and spring 21 returns cam 12 to normal position as indicated in Fig. 1. ln other positions of the pin 18 on the quad- 110 the cam, and means -f of a printing press, a ductoi roll, and means` for moving said roll to and from said sup-4 vibration of the ductor.

rant, thecontact yvill be longeror' shorter,

'shown as employing an overshot feed roll,

and the modification shown at Fig. 4 is intended to illustrate it in connection with an nudershot` feed roll. The mechanismV in the modification differs from that ofthe Figs. 1'and'2 .mainly in the substitution of an undershot feed roll for the roll 6, and an inkV reservoir 50 adapted to be used with 'such a roll instead of reservoir 5.

I claim f -1. The combination with the ink supply roll of a printing press, of a ductor roll movable into and out of Contact with said supply roll, and mechanism for controlling the length of time occupied in such -contacts, such mechanism consisting of a spring forcing'the ductor roll against the supply roll, 4an oscillating cam forcing the ductor avvay from then supply roll, a quadrant mounted on the same axis with the cam' and having a pin insertible in a curved slot of for actuating the quadrant.'

2. In combinationwith an ink supply roll ply roll; of means for regulating the'tme of contact between said` ductor and supply roll, comprising a. movable slotted member, a quadrant beside'said member, a pin adjustably attached to said quadrant `and, en-

Y a ino' the slot in said member and means g e a or` oscillating said quadrant once 'for each 3.' In an inking mechanism for printing presses the combination of an ink supply roll, aductorroll and means formoving said roll to and from'the'supply roll; with an oscillating cam adapted to vregulate the time of contact between the ductor and supply roll, anoscillating'l quadrant vbeside said 5 cam, means for osc' ating saidA quadrant -once for each vibration ,of the ductor, and

adjustable means for variably locking the quadrant to said cam so 'as tocause the latter to permit contact between the ductor and 5 supply. roll. i t

4.l In combination .an ink supply roll, a ductor roll and means for movingsaid ductor roll to and from said supply roll; with a slotted cam adapted to prevent con- 61 tact of the ductor and supply roll, an oscillating quadrant beside saidA cam, a pin adjustably attached to said quadrant and engaging the slot in said cam, and means for oscillating said quadrant 'once foreach vibra' 6: tion of the ductor.

5. In an inking mechanism the combination of a supply roll, a ductor, a rotatable A cam and connecting rod for operating the ductor, said cam ositively moving the duc-I7( tor from the supp y -roll but permitting it t0 move yieldingly toward the 'su ply roll; with a quadrant, means for-oscillting said quadrant, a cam operable by said quadrant, adjustable pin and slot connections between the quadrant andsaid slotted cam whereby the cam is operable to permit the .ductor roll to contact with the supply roll. for any desired interval. l

- 6.'In an inking'mechanism for printing 80 presses the combination of an ink supply roll, a ductor roll and means for moving said roll to and from the -su ply roll; a slotted oscillating cam adapte in, normal position to prevent contactbetween the duc- 85 tor and supply roll, aY spring for. holding said cam in normal position, a quadrant besidesaid cam, means for oscillating lsaid quadrant once for each vibration of'theducy tor, and an adjustable pin on the quadrant engaging the slot in said cam and adapted to actuate the latter to permitcontact between the ductor and supply roll.

'ivnoHAEL A. DRoITCoUR.

l Vitnesses:

I-I.I M. MUNDA'Y, Enw. S. Evan'rs. 

